/*
Error: Mixin flexbox is missing argument $properties.
        on line 695 of D:/www/github/nodePPT/assets/scss/nodeppt.scss, in `flexbox'
        from line 695 of D:/www/github/nodePPT/assets/scss/nodeppt.scss

690:     left: 0;
691:     padding: 1em;
692:     background: rgba(0, 0, 0, 0.3);
693:     opacity: 0;
694:     // pointer-events: none;
695:     @include flexbox;
696:     @include flex-center-center;
697:     @include border-radius($slide-border-radius);
698: 
699:     @include box-sizing(border-box);
700:     @include transform(translateY($slide-height / 2));

Backtrace:
D:/www/github/nodePPT/assets/scss/nodeppt.scss:695:in `flexbox'
D:/www/github/nodePPT/assets/scss/nodeppt.scss:695
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:73:in `block in perform_arguments'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:65:in `zip'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:65:in `perform_arguments'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:348:in `block in visit_mixin'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/stack.rb:98:in `block in with_mixin'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/stack.rb:98:in `with_mixin'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:336:in `visit_mixin'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/stack.rb:79:in `with_base'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:158:in `visit'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:420:in `block (2 levels) in visit_rule'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:420:in `map'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:420:in `block in visit_rule'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:179:in `with_environment'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:418:in `visit_rule'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/stack.rb:79:in `with_base'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:158:in `visit'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/base.rb:52:in `block in visit_children'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/base.rb:52:in `map'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/base.rb:52:in `visit_children'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:167:in `block in visit_children'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:179:in `with_environment'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:166:in `visit_children'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/base.rb:36:in `block in visit'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:186:in `visit_root'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:157:in `visit'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/visitors/perform.rb:8:in `visit'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/root_node.rb:36:in `css_tree'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/tree/root_node.rb:20:in `render'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/engine.rb:268:in `render'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/plugin/compiler.rb:492:in `update_stylesheet'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/plugin/compiler.rb:215:in `block in update_stylesheets'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/plugin/compiler.rb:209:in `each'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/plugin/compiler.rb:209:in `update_stylesheets'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/sass-3.4.9/lib/sass/plugin/compiler.rb:293:in `watch'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/compass-1.0.1/lib/compass/sass_compiler.rb:46:in `watch!'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/compass-1.0.1/lib/compass/commands/watch_project.rb:41:in `perform'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/compass-1.0.1/lib/compass/commands/base.rb:18:in `execute'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/compass-1.0.1/lib/compass/commands/project_base.rb:19:in `execute'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/compass-1.0.1/lib/compass/exec/sub_command_ui.rb:43:in `perform!'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/compass-1.0.1/lib/compass/exec/sub_command_ui.rb:15:in `run!'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/compass-1.0.1/bin/compass:30:in `block in <top (required)>'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/compass-1.0.1/bin/compass:44:in `call'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/compass-1.0.1/bin/compass:44:in `<top (required)>'
C:/Ruby200-x64/bin/compass:23:in `load'
C:/Ruby200-x64/bin/compass:23:in `<main>'
*/
body:before {
  white-space: pre;
  font-family: monospace;
  content: "Error: Mixin flexbox is missing argument $properties.\A         on line 695 of D:/www/github/nodePPT/assets/scss/nodeppt.scss, in `flexbox'\A         from line 695 of D:/www/github/nodePPT/assets/scss/nodeppt.scss\A \A 690:     left: 0;\A 691:     padding: 1em;\A 692:     background: rgba(0, 0, 0, 0.3);\A 693:     opacity: 0;\A 694:     // pointer-events: none;\A 695:     @include flexbox;\A 696:     @include flex-center-center;\A 697:     @include border-radius($slide-border-radius);\A 698: \A 699:     @include box-sizing(border-box);\A 700:     @include transform(translateY($slide-height / 2));"; }
